Respuesta :

[tex]\begin{gathered} f(x)=3x \\ g(x)=2x \end{gathered}[/tex]

Composition of functions:

[tex](f\circ g)(x)=f(g(x))[/tex]

Substitute the x in f for g(x):

[tex](f\circ g)(x)=3(g(x))=3(2x)=6x[/tex]

Then, the given composition is equal to 6x